robokitshop HC05 Master-Slave Bluetooth module Micro Controller Board Electronic Hobby Kit

PLEASE NOTE: ! ! Do not place the power supply to the signal pin, it will directly burn!! 1. Input power supply 3.3~6V, Prohibit more than 7V 2. No "Automatically prevent power supply reversing function", so please correctly connect the power supply to the module. 3. We advise to install "Bluetooth master module". 4. The "State" is output pin for LED status, when Bluetooth is "Unconnected", output is "Pulse" ; when Bluetooth is "connected", output is "High level", we can determine the state from "MCU".